Finding the Third Proportional to 2,578,370 and 5,615,506

Step by Step Solution

1. Step 1: Write the proportion equation
   2,578,370 : 5,615,506 = 5,615,506 : x
2. Step 2: Convert to fraction form
   2,578,370/5,615,506 = 5,615,506/x
3. Step 3: Cross multiply
   2,578,370x = 5,615,506 × 5,615,506
4. Step 4: Simplify right side
   2,578,370x = 31,533,907,636,036
5. Step 5: Solve for x
   x = 31,533,907,636,036/2,578,370
6. Step 6: Final answer
   x = 12,230,171.63